A girl who isn't girlfriend material, but she happens to be chill as fuck. Upon first glance she seems dateable but after further deductions she is too cool to date and is automatically a best friend. (friendzone)

Chad: YO DUDE!
Bill: What?
Chad: I heard you were hanging with your girl last night.
Bill: Yea it was a lot of fun.
Chad: Did you try and put IT in her?
Bill: Nah.... she's just a dude-friend.